lecture 1 - BILD 3: Organismic and Evolutionary Biology Dr....

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Unformatted text preview: BILD 3: Organismic and Evolutionary Biology Dr. Keefe Reuther kdreuther@ucsd.edu Course Website is on WebCT http://webct.ucsd.edu Or you can Google UCSD WebCT If you are normally enrolled or waitlisted in this class you should already have access to the website. On website you will find: Course information and syllabus PowerPoint lectures as .pdf files Announcements Discussion Board Readings Grades Section sign up Sign up for discussion sections will be online with you student PID http://sections.ucsd.edu/ If you are on the wait list, you may add your preference. Add more than one in order of preference. TEXT Campbell, 8th edition, especially units: 4 (Mechanisms of Evolution) 5 (The Evolutionary History of Biodiversity) 8 (Ecology) Exams Talk to me this week if you have a conflicting Saturday final exam ONLY excuse to miss a test is hospitalization or serious family emergency (only unplanned events count with valid documentation) Religious conflict/OSD accommodation must talk to me this week. No weddings, births, parties, vacations, excuses How to do well in this course Attend lectures and take notes Go over those notes and text soon after lecture. Attend sections and ask questions. Cheating Goals of Course The living world at levels from whole organisms to ecosystems Origin, history and diversity of life on earth Evolutionary, ecological, and historical processes that have shaped biotic diversity Knowledge of these processes is essential for: Understanding biology in general Good stewardship of the earths biota Outline What is evolution? History of evolutionary thought Pre-Darwin Darwin Major tenets of Darwinian evolutionary theory Historical reception Modern evidence What is evolution? Evolution What is it? Common usage: __________________ Scientific definition: evolution occurs when allele frequencies (i.e. genetic characteristics) change in a population. "Wherever then all the parts came about just what they would have been if they had come to be for an end, such things survived, being organized spontaneously in a fitting way; whereas those which grew otherwise perished and continue to perish English translation: evolution by natural selection Aristotle on_______________(c. 490 History of evolutionary thought ______________________ (384-322 BCE) Historia animalium species as types, behavior is instinctual, and the Ladder of Life Typological thinking pervaded Western biology for over 2000 years and hindered acceptance of evolutionary theories Species are immutable and within species variation is negligible Variation results from mistakes (Platos Theory of Special Creation 1. Species were created independently of each other 2. Species do not change over time No evolution No extinction 3. Species were created recently Challenges to Special...
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lecture 1 - BILD 3: Organismic and Evolutionary Biology Dr....

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